Which of the following statements are correct？（ ）
选项：

A:The positioning of an organisation, its product/s and brand/s should be changed regularly.
B:The positioning of an organisation, its product/s and brand/s should be consistently reinforced.
C:How an organisation wishes to position its product offering to a target market should influence the development of its marketing mix for that target market.
D:A product, organisation or brand may be able to be repositioned.